/*********************************************************************
 * Copyright (C) 2005 Andrew Khan
 * <p>
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * <p>
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * <p>
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ***************************************************************************/

package jxl.biff.formula;

import jxl.biff.CellReferenceHelper;
import jxl.common.Assert;
import jxl.common.Logger;

/**
 * A class to hold range information across two entire columns
 */
class ColumnRange extends Area {
    /**
     * The logger
     */
    private static Logger logger = Logger.getLogger(ColumnRange.class);

    /**
     * Constructor
     */
    ColumnRange() {
        super();
    }

    /**
     * Constructor invoked when parsing a string formula
     *
     * @param s the string to parse
     */
    ColumnRange(String s) {
        int seppos = s.indexOf(":");
        Assert.verify(seppos != -1);
        String startcell = s.substring(0, seppos);
        String endcell = s.substring(seppos + 1);

        int columnFirst = CellReferenceHelper.getColumn(startcell);
        int rowFirst = 0;
        int columnLast = CellReferenceHelper.getColumn(endcell);
        int rowLast = 0xffff;

        boolean columnFirstRelative =
                CellReferenceHelper.isColumnRelative(startcell);
        boolean rowFirstRelative = false;
        boolean columnLastRelative = CellReferenceHelper.isColumnRelative(endcell);
        boolean rowLastRelative = false;

        setRangeData(columnFirst, columnLast,
                rowFirst, rowLast,
                columnFirstRelative, columnLastRelative,
                rowFirstRelative, rowLastRelative);
    }

    /**
     * Gets the string representation of this item
     *
     * @param buf the string buffer
     */
    public void getString(StringBuffer buf) {
        CellReferenceHelper.getColumnReference(getFirstColumn(), buf);
        buf.append(':');
        CellReferenceHelper.getColumnReference(getLastColumn(), buf);
    }
}
